Incrustation preventive



UNITED STATES PATENT. OEErcE.

DAVIS R. BOOGHER, OF ST. LOUIS, MISSOURI.

INCRUSTATION PREVENTIVE.

SPECIFICATION forming part of Letters Patent No. 40 6,698, da.ted July9, 1889. Application filed December 15, 1888. Serial No. 293.668. (Nospecimens.)

To all whom it may conceru:

Be it known that I, DAVIS R. BOOGHER, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inBoiler Compounds, of which the following is a full, clear, and exactdescription.

My invention relates to an improved compound for the prevention andremoval of scale in boilers; and my invention .consists in a compoundcomposed of the following parts, in or about the proportions named, viz:EX- tract of hemlock, three hundred and eighty pounds; gambia, onehundred pounds; sumac, one hundred pounds; Wormwood, fifty pounds, andsalts of tartar, fifty pounds.

DAVIS R. BOOGI-IER.

In presence of- GEO. H. KNIGH EDW. S. KNIGHT.

